<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>练习</title>
    <style>
        .box{
            width: 200px;
            height: 200px;
            background-color: blue;
        }
        .image-background{
            background-image: url(http://sk7po644p.hn-bkt.clouddn.com/.背景图.webp.png);
            width: 500px;
            height: 500px;
            /* background-repeat: no-repeat; */
        }
        .cover-image{
            width: 600px;
            height: 600px;
            background-repeat: no-repeat;
            background-image: url(http://sk7po644p.hn-bkt.clouddn.com/.背景图.webp.png);
        }
        .header{
            width: 200px;
            height: 200px;
            background-image: url(http://sk7po644p.hn-bkt.clouddn.com/.背景图.webp.png);
            background-repeat: no-repeat;
            background-position: 100px 100px;
        }
        .pattern{
            width: 200px;
            height: 200px;
            background-image: url(http://sk7po644p.hn-bkt.clouddn.com/.背景图.webp.png);
            /* background-repeat: no-repeat; */
            background-repeat: repeat-y;
        }
    </style>
</head>
<body>
    <div class="box">
    </div>
    <div class="image-background">
    </div>
    <div class="cover-image">
    </div>
    <div class="header">
    </div>
    <div class="pattern">
    </div>
</body>
</html>